

* {
	margin: 0;
	padding: 0;
}

.box {
	
	height: 50px;
	width: 1500px;
	background-color: #eeeeee;
	
}

.u1>li:nth-of-type(1){
	
padding: 10px;	
margin-right: 35px;
	}
	

	
ul li{
	
	
list-style-type: none;
display: inline-block;
float: left;

  margin: 0 auto;
    font-size: 18px;
 

	
}
.u1>li>a{
	
 text-decoration: none;
    color: grey;
  display: inline-block;
   border-right: 1px solid;
      margin: 15px auto;
    padding: 0 20px;	
 
	
}
/*.u1 a:nth-of-type(1){
	
	border-right: none;
}*/


.clear:after {
	content: '';
	clear: both;
	height: 0;
	display: inline-block;
}

.dropdown{
	
	position: relative;
	
	    display:inline-block;
}




.dropdown-content{
	
	
	width: 265px;
	height:250px;
	border: 1px solid grey;
	padding: 5px;
 position:absolute;
	
	 display:none;
	
	
}
 /* 鼠标移入后显示下拉菜单 */
 .dropdown:hover .dropdown-content{
    display:block;
 }

 /* 鼠标移入后修改链接的背景色 */
 .dropdown-content a:hover{
    background-color:#E8E8E8;
}


.num1{
	width: 250px;
	height: 60px;
	border-bottom: 1px solid grey;
	padding: 10px;
}
.num2{
		width: 250px;
	height: 100px;
	border-bottom: 1px solid grey;
	padding: 3px;
	margin: 5px;
}


.num3{
	
	padding:5px;
	margin: 5px;	
	
	
}
.dropdown-content ul li {
	
margin:5px auto ;
	
}

.dropdown-content li a{
	
	text-decoration: none;
	color:grey;
	padding:5px 5px;


  

}
